945931858 has 4 divisors (see below), whose sum is σ = 1418897790. Its totient is φ = 472965928.

The previous prime is 945931843. The next prime is 945931871. The reversal of 945931858 is 858139549.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 751691889 + 194239969 = 27417^2 + 13937^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236482963 + ... + 236482966.

Almost surely, 2^945931858 is an apocalyptic number.

945931858 is a deficient number, since it is larger than the sum of its proper divisors (472965932).

945931858 is a wasteful number, since it uses less digits than its factorization.

945931858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472965931.

The product of its digits is 1555200, while the sum is 52.

The square root of 945931858 is about 30756.0052347505. The cubic root of 945931858 is about 981.6423446896.

The spelling of 945931858 in words is "nine hundred forty-five million, nine hundred thirty-one thousand, eight hundred fifty-eight".